the way in which dinosaurs ecologically interacted in an expansive web of relationships with other organisms and their natural environment, underscoring "paradigm shifts", which conceptualize the nature of the dinosaurian world. Research Aside from his research conducted in museums, Sampson has undertaken paleontological fieldwork in countries such as Zimbabwe, South Africa and Madagascar as well as the United States and Canada. His specialist fields of research include phylogenetics, functional morphology, and evolution of Late Cretaceous dinosaurs. Sampson is particularly notable for his work on the carnivorous theropod dinosaur Majungasaurus and his studies into the paleobiogeography of Gondwana. In 1995 he made a phylogenetic analysis of the Centrosaurinae and Ceratopsidae in the state of Montana and produced two papers on these horned dinosaurs of the Late Cretaceous. Sampson also published a paper documenting the discovery of the first Tyrannosaurus specimen found in Utah, as well as the first evidence of coexistence between Tyrannosaurus and sauropods. In 1998 he conducted thorough paleontological studies into the Cretaceous period in Madagascar and published several papers on it. These include Predatory dinosaur remains from Madagascar: Implications for the Cretaceous biogeography of Gondwana. and The theropodan ancestry of birds: New evidence from the Late Cretaceous of Madagascar, both published in 1998. In 2001 he returned to Madagascar and conducted some important research into the evolution of Gondwanan theropods, publishing a paper on it, entitled A bizarre predatory dinosaur from Madagascar: implications for the evolution of Gondwanan theropods. In 2007 he published Dental morphology and variation in Majungasaurus crenatissimus (Theropoda: Abelisauridae) from the Late Cretaceous of Madagascar. Sampson stresses the importance of evolution in understanding the dynamics of ecology in everyday life and that is underplayed in modern society: Personal life Sampson currently lives with his wife and daughter in San Francisco. Bibliography Selected publications Sampson, S. D. 1995. Two new horned dinosaurs from the Upper Cretaceous Two Medicine Formation of Montana; with a phylogenetic analysis of the Centrosaurinae (Ornithischia: Ceratopsidae). Journal of Vertebrate Paleontology, 15(4): 743–760. Personal life He has two daughters and resides in the San Francisco Bay Area with his wife Toni. References 1961 births Living people Canadian paleontologists People from Vancouver Canadian curators University of Toronto alumni Paleontology in British Columbia